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Human Carboxypeptidase B1 / CPB1 ELISA Pair Set

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CPB1Materials provided
Capture Ab:0.2 mg/mL of mouse anti-CPB1 monoclonal antibody, Dilute to a working concentration of 2 μg/mL in CBS before coating.
Detection Ab:0.5 mg/mL of rabbit anti-CPB1 monoclonal antibody conjugated to horseradish-peroxidase (HRP). Dilute to working concentration of 0.25 μg/mL in detection antibody dilution buffer before use.
Standard:Each vial contains 30 ng of recombinant CPB1. Reconstitute with 1 mL detection antibody dilution buffer. After reconstitution, store at -20℃ to -80℃ in a manual defrost freezer. A seven-point standard curve usi ng 2-fold serial dilutions in sample dilution buffer, and a high standard of 400 pg/mL is recommended.
The minimum detectable dose of Human Carboxypeptidase B1 / CPB1 was determined to be approximately 6.25 pg/ml. This is defined as at least three times standard deviations above the mean optical density of 10 replicates of the zero standard.
CPB1Principle of the product
The Human Carboxypeptidase B1 / CPB1 ELISA Pair Set is for the quantitative determination of Human Carboxypeptidase B1 / CPB1.
This ELISA Pair Set contains the basic components required for the development of sandwich ELISAs.
The Sino Biological ELISA Pair Set is a solid phase sandwich ELISA (Enzyme-Linked Immunosorbent Assay). It utilizes a monoclonal antibody specific for Carboxypeptidase B1 / CPB1 coated on a 96-well plate. Standards and samples are added to the wells, and any Carboxypeptidase B1 / CPB1 present binds to the immobilized antibody. The wells are washed and a horseradish peroxidase conjugated rabbit anti-Carboxypeptidase B1 / CPB1 monoclonal antibody is then added, producing an antibody-antigen-antibody "sandwich". The wells are again washed and TMB substrate solution is loaded, which produces color in proportion to the amount of Carboxypeptidase B1 / CPB1 present in the sample. To end the enzyme reaction, the stop solution is added and absorbances of the microwell are read at 450 nm.
Capture Antibody: Aliquot and store at -20℃ to -80℃ for up to 6 months from date of receipt. Avoid repeated freeze-thaw cycles.
Detection Antibody: Protect it from prolonged exposure to light. Aliquot and store at -20℃ to -80℃ and for up to 6 months from date of receipt. Avoid repeated freeze-thaw cycles.
Standard: Store lyophilized Standard at -20℃ to -80℃ for up to 6 months from date of receipt. Aliquot and store the reconstituted Standard at -80℃ for up to 1 month. Avoid repeated freeze-thaw cycles.
Other CPB1 Protein Products

Human Carboxypeptidase B1, also well known as pancreatic procarboxypeptidase B (PCPB), is a highly pancreas -specific protein (PASP), and has been identified previously as a serum marker for acute pancreatitis and pancreatic graft rejection. As the prototype for those human exopeptidases that cleave off basic C-terminal residues, CPB1 specifically cleaves the C-terminal Arg and Lys residues with a preference for Arg. The B1 and B2 forms of procarboxypeptidase B differ from each other mainly in isoelectric point.The deduced amino acid sequence of PCPB predicts a 416-amino acid preproenzyme consisting of a 15-aa signal peptide, a 95-aa activation peptide and a 307-aa mature chain. The secreted PCPB zymogen is converted to enzymatically active CPB1 by limited proteolysis by trypsin.

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